coming from it's predecessor the nokia n9 and using this telephone feels as an upgrade.
It's responding fast and the native and also android applications work really good. there is an obvious small drawback of having android and native applications an that is the android applications are not able to see the native apps. the other way around does work though.
It takes some work to get the google play operational on the phone but it does pay of in being able to run all of the apps without issues.

I think it is worth to see specification and details of Jolla Tablet http://igg.me/at/jolla-tablet/x/9341985 to find out what are advantages. And eventually use discount which is to be closed in less then 20hours. In my case this is true multitasking and safety of my data including contacts and professional data, as loosing them can lead me to trouble or can feed my direct competitors if they would get them. Jolla provide me both advantages. As Wikipedia says:
Jolla Tablet's Sailfish OS can run its own native apps and Android apps, downloaded via the Jolla Store or any other Android app marketplaces. A widely understood Linux software can be used (in both console/terminal or graphic mode, either as compatible binaries or compiled with actual The Sailfish OS SDK), the OS use RPM Package Manager[6] by default.
This is important for all admins. The Sailfish OS as a full Linux gives ability to supervise remotely any services or servers. There are plenty Lion inux or Android tools. Jolla Tablet CPU is Intel so x86. Note that Jolla does not break sessions like others, so having a connection allow to stay connected several hours undisturbed. And here comes true multitasking (after Wikipedia):
Live Multitasking on Linux MeeGo Sailfish OS allows different apps to run simultaneously, parallelly in the same time, and independently. Among other advantages multitasking allows to switch between any running software (also Android to Sailfish and vice versa) in the fly. User can see all running apps in one single multitasking view, from which can directly control running and minimised apps like e.g.: to change music track or to play and pause video stream, without opening the app in full or to call/answer/take a picture without breaking, all of those mentioned above, players activities. This way of interaction is impossible with other mobile OSes which freeze apps temporally in a background without access, in contrary to true multitasking.
That means that when I have opened a session to correct or maintain a server I can leave it, and eg. make a call to sb or pick up a call from an senior staff to instruct me what to do,and session still will be active, not any frozen etc.. that is really important, as otherwise I would have to log in again from the beginning. Jolla allow me not to go through all this every 15minutes. I can do my job faster and I am more moveable, as I can take Jolla with me anywhere and alarms will let me know if anything would require my attention or intervention. This is really advantage. As I assume Linux tools to be way better, Jolla Tablet due to Intel CPU is x86, and Linux Sailfish OS gives me advantage of using terminal/console mode what is more convenient for me - all that makes me to think I will have a dream machine for my purposes.

Also I will have with Jolla Tablet possibility to launch all kinds of: Sailfish native soft + Linux huuuuge library of soft + Android apps + eventually some MeeGo software also. That give me more software possible then any Android device have..... And all this for that price?? For me this is a game-changer.